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Updated: Oct 5, 2025
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Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
Published on: August 15, 2015
10.0K
Tricritical-point phase diagram in PrCu9Sn4
Fanying Meng1,2,3, Min Ge2, Wensen Wei1,3
1Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China.
Summary
Researchers observed a field-modulated tricritical phenomenon in single-crystal PrCu9Sn4, revealing critical behavior consistent with a tricritical mean-field model. This discovery provides a new platform for studying magnetic couplings and tricritical phenomena.
Area of Science:
- Condensed matter physics
- Magnetism
- Phase transitions
Background:
- Tricritical phenomena are fundamental to understanding multiple interacting phases.
- Investigating these phenomena in novel materials is crucial for advancing condensed matter physics.
Purpose of the Study:
- To realize and investigate a field-modulated tricritical phenomenon in single-crystal PrCu9Sn4.
- To construct the H-T phase diagram and analyze critical behavior.
Main Methods:
- Magnetization measurements under variable magnetic field directions.
- Systematic study of critical behavior to determine critical exponents.
- Construction of the H-T phase diagram.
Main Results:
- Ferromagnetic coupling was observed for H//c in PrCu9Sn4.
- A first-ordered paramagnetic-to-ferromagnetic transition occurred at Tc = 11.7 K for H//c.
- Critical exponents (β=0.195(8), γ=0.911(1), δ=0.0592(1)) were consistent with a tricritical mean-field model.
- The tricritical point (TCP) was identified at (Htr = 799 kOe, Ttr = 11.3 K).
Conclusions:
- Single-crystal PrCu9Sn4 exhibits a field-modulated tricritical phenomenon.
- The material serves as a valuable platform for in-depth studies of magnetic couplings and tricritical behavior.
- The findings contribute to a deeper understanding of phase transitions in magnetic materials.
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